package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UsrMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.core.convert.ConversionService;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    /**
     *
     * @param userLoginDTO
     * @return
     */
//    微信登录服务接口地址
//    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    UsrMapper usrMapper;


    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
//        调用微信接口服务，获取微信用户的openid
        String openid=getOpenid(userLoginDTO.getCode());
//        判断openid是否为空，如果为空则代表登录失败，抛出登录业务异常
        if(openid==null){
            throw  new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
//        判断当前用户是否是新用户
        User user=usrMapper.getByopenId(openid);
//        如果是新用户,自动完成注册
        if(user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            usrMapper.insert(user);
        }

        return user;
    }
    /**
     * 调用微信接口服务，获取微信用户的openid
     * @param code
     * @return
     */
        private String getOpenid(String code){
            Map<String,String> map=new HashMap<>();
            map.put("appid",weChatProperties.getAppid());
            map.put("secret",weChatProperties.getSecret());
            map.put("js_code",code);
            map.put("grant_type","authorization_code");
            String json= HttpClientUtil.doGet(WX_LOGIN,map);

            JSONObject jsonObject = JSONObject.parseObject(json);
            String openId=jsonObject.getString("openid");
            return openId;
        }
}
